feat(jellyseer): sortable/filterable requests table on the Requests tab

Replace the static "recent requests" list with a proper table of all Jellyseerr
requests, sorted by date added (newest first by default) with standard sorting
and filtering.

Backend:
- JellyseerrClient.requests(max_count=500): paginated GET /api/v1/request
  (sort=added), mapped with type (movie/tv), status, media_status, and
  created_at labels. Returns up to 500 so the table can sort/filter client-side.
- fetch_jellyseer_requests(service) reuses the per-service cached client
  (shared with the stats widgets).
- new GET /api/jellyseerr/requests endpoint.

Frontend:
- JellyseerRequestsTable: TanStack Table (sorting via getSortedRowModel,
  pagination via getPaginationRowModel) reusing the Table primitives +
  TablePagination. Columns: Name / Type / Status / Media / Requested, all
  sortable; default sort Requested desc. A search box filters by name and a
  status dropdown defaults to "Open" (pending+approved+processing) with
  All/Pending/Approved/Declined options. (The shared DataTable is deliberately
  visibility-only, so this is a dedicated sortable table.)
- RequestsTab renders the stats grid + the new table (the compact recent list
  stays on the Requests overview widget).
- useJellyseerRequests hook + fetchJellyseerRequests API client.

Tests: client requests() mapping + single-page stop; fetch helper not-configured;
RequestsTab test mocks both hooks. 404/404 backend + 184/184 frontend pass;
build (tsc -b && vite build) + ESLint clean.

frontend/src/api/.pi-map.md

@@ -4,18 +4,18 @@ dir: frontend/src/api
 index: frontend/src/api/.pi-map.index.md
 
 ## role
-Typed API client layer that centralizes all backend communication for the frontend application across multiple service domains.
+Frontend API client layer that centralizes typed HTTP requests to backend services and external integrations.
 ## files
 - authentik.ts | API client providing functions to fetch users, send messages, and check message status from the Authentik service. | exp: AuthentikUser, AuthentikUsersResponse, AuthentikMessageInput, AuthentikMessageResponse, func:fetchAuthentikUsers(serviceId: string, params: { search?: string; page?: number; page_size?: number }) → Promise<AuthentikUsersResponse>, call:get, call:String, func:sendAuthentikMessage(serviceId: string, input: AuthentikMessageInput) → Promise<AuthentikMessageResponse>, call:post, func:fetchAuthentikMessageStatus(serviceId: string) → Promise<Record<string, unknown>>, call:get | dep: ./shared
 - backups.ts | API client functions for fetching and managing backup jobs, runs, alerts, and dashboard summaries. | exp: func:fetchBackupJobs(serviceId: string) → Promise<BackupJob[]>, call:get, func:fetchBackupJob(jobId: string) → Promise<{ job: BackupJob; runs: BackupRun[] }>, call:get, func:fetchBackupRuns(jobId: string, status: string, serviceId: string) → Promise<BackupRun[]>, call:get, func:fetchBackupRun(runId: string) → Promise<BackupRun>, call:get, func:fetchBackupAlerts(jobId: string, acknowledged: boolean, severity: string, serviceId: string) → Promise<BackupAlert[]>, call:get, call:String, func:acknowledgeBackupAlert(alertId: string) → Promise<BackupAlert>, call:post, func:fetchBackupDashboard() → Promise<BackupDashboardSummary>, call:get | dep: ./shared, ../types/backups
 - client.ts | Typed API client providing functions for interacting with a FastAPI backend across dashboard, monitoring, media, files, jobs, and observability endpoints. | exp: fetchCounts, fetchLibraries, fetchActivity, fetchUsers, fetchNowPlaying, fetchMonitoringMachines, fetchAppVersion, fetchDashboardShortcuts, saveDashboardShortcut, deleteDashboardShortcut, fetchMonitoringSettings, fetchSSHKeys, generateSSHKey, saveSSHKey, deleteSSHKey, fetchSavedTasks, fetchSavedTaskRuns, saveTask, deleteTask, runTask, saveMonitoringMachine, testMonitoringMachineSSH, deleteMonitoringMachine, resetLocalDatabase, fetchMediaStatus, buildMediaIndex, stopMediaIndexBuild, forceStopMediaIndexBuild, queryMedia, fetchDirectoryListing, fetchFfprobe, fetchStat, resolvePath, fetchJobTemplates, runJob, fetchUserMessageQueueStatus, sendUserMessage, fetchAlertmanagerAlerts, fetchAlertmanagerStatus, fetchPrometheusStatus, fetchPrometheusTargets | dep: ../types, ./shared
 - dashboards.ts | API client providing CRUD operations for named dashboards via REST endpoints. | exp: NamedDashboard, NamedDashboardInput, func:fetchDashboards() → Promise<NamedDashboard[]>, call:get, func:fetchDashboardBySlug(slug: string) → Promise<NamedDashboard>, call:get, call:encodeURIComponent, func:createDashboard(input: NamedDashboardInput) → Promise<NamedDashboard>, call:post, func:updateDashboard(input: NamedDashboardInput) → Promise<NamedDashboard>, call:put, func:deleteDashboard(id: string) → Promise<{ status: string }>, call:del | dep: ./shared
-- jellyseerr.ts | Fetches Jellyseerr request statistics and recent requests for a Jellyfin service instance via an API endpoint. | exp: JellyseerStat, JellyseerRecentRequest, JellyseerStatsResponse, func:fetchJellyseerrStats(jellyfinServiceId: string) → Promise<JellyseerStatsResponse>, call:get | dep: ./shared
+- jellyseerr.ts | This file provides API client functions to fetch Jellyseerr request statistics and request lists for a Jellyfin service instance. | exp: JellyseerStat, JellyseerRecentRequest, JellyseerStatsResponse, JellyseerRequest, func:fetchJellyseerrStats(jellyfinServiceId: string) → Promise<JellyseerStatsResponse>, call:get, func:fetchJellyseerrRequests(jellyfinServiceId: string) → Promise<JellyseerRequest[]> | dep: ./shared
 - services.ts | API client functions for CRUD operations and testing of service instances. | exp: func:fetchServiceTypes() → Promise<ServiceTypeInfo[]>, call:get, func:fetchServiceInstances(serviceType: string) → Promise<ServiceInstance[]>, call:get, func:createServiceInstance(input: ServiceInstanceInput) → Promise<ServiceInstance>, call:post, func:updateServiceInstance(input: ServiceInstanceInput) → Promise<ServiceInstance>, call:put, raise:Error, func:deleteServiceInstance(serviceId: string) → Promise<{ status: string }>, call:del, func:testServiceInstance(input: ServiceInstanceInput) → Promise<ServiceTestResult>, call:post | dep: ./shared, ../types
 - shared.ts | Provides shared API helper functions (GET, POST, PUT, DELETE, etc.) that automatically attach OIDC auth tokens and handle URL building and error parsing for backend requests. | exp: API_BASE, func:buildUrl(path: string, params: Record<string, string>) → string, call:isAbsoluteUrl, call:Object.entries, call:url.searchParams.set, call:url.toString, func:readErrorDetail(response: Response) → Promise<string>, call:response.text, call:JSON.parse, call:detail.trim, func:buildHeaders(isJsonBody: boolean) → Headers, call:getAccessToken, call:headers.set, func:get(path: string, params: Record<string, string>) → Promise<T>, call:fetch, call:buildUrl, call:buildHeaders, call:response.json, raise:Error, func:post(path: string, body: unknown) → Promise<T>, call:fetch, call:buildUrl, call:buildHeaders, call:JSON.stringify, call:response.json, raise:Error, func:postForm(path: string, body: FormData) → Promise<T>, call:fetch, call:buildUrl, call:buildHeaders, call:response.json, raise:Error, func:put(path: string, body: unknown) → Promise<T>, call:fetch, call:buildUrl, call:buildHeaders, call:JSON.stringify, call:response.json, raise:Error, func:del(path: string) → Promise<T>, call:fetch, call:buildUrl, call:buildHeaders, call:response.json, raise:Error | dep: ../auth, getAccessToken (from ../auth), fetch API, Headers API, URL API, import.meta.env
 - widgets.ts | API client module providing CRUD operations for widget instances, widget references, builtin widget kinds, and widget data retrieval. | exp: WidgetReference, WidgetReferenceInput, func:fetchBuiltinWidgetKinds() → Promise< BuiltinWidgetKindInfo[] >, call:get, func:fetchWidgetInstances(serviceId: string, scope: "dashboard" | "service") → Promise<WidgetInstance[]>, call:get, func:createWidgetInstance(input: WidgetInstanceInput) → Promise<WidgetInstance>, call:post, func:updateWidgetInstance(input: WidgetInstanceInput) → Promise<WidgetInstance>, call:put, raise:Error, func:deleteWidgetInstance(widgetId: string) → Promise<{ status: string }>, call:del, func:fetchWidgetData(widgetId: string) → Promise<WidgetDataResponse>, call:get, func:fetchWidgetReferences(dashboardScope: string) → Promise<WidgetReference[]>, call:get, func:createWidgetReference(input: WidgetReferenceInput) → Promise<WidgetReference>, call:post, func:deleteWidgetReference(referenceId: string) → Promise<{ status: string }>, call:del, func:detachWidgetReference(referenceId: string) → Promise<WidgetInstance>, call:post, func:updateWidgetReference(referenceId: string, sortOrder: number) → Promise<WidgetReference>, call:put | dep: ./shared, ../types
 ## arch
-Modular domain-based API clients built on a shared HTTP helper that handles OIDC authentication, URL building, and error parsing, with each module exposing typed functions for specific service endpoints.
+Modular API client pattern with a shared helper module for authentication, URL building, and error handling, alongside domain-specific client files organized by service area.
 ## tags
 fetch, call:get, widget, dashboard, call:build, authentik, delete, call:post
 ## symbols